Recovery of ingredients from wool-scouring and analogous liquors.



W. G. ABBOTT, Jn.

RECOVERY OF INGREDIENTS PROM WOOL SOOURING AND ANALOGOUS LIQUORS.

APPLICATION FILED JAKE, 1913.

Patented Sept. 8, 1914.

UNITED sTA s PATENT OFFICE.

WI LLIAM GEORGE ABBOTT, JI L, 0F WILTON, NEW HAMPSHIRE.

RECOVERY OF INGREDIENTS FROM VIOOL-SCOURING AND ANALOGOUS' LIQUORS.

Application filed January 2. 1913.

sions and suspensions, of which a conspicuous example is found in wool scouring liquor, and has for its ob ect the separating ofthe greasy constituents from the liquor without the employment of relatively expensive refining processes.

In the accompanying drawings, WlllCll illustrate apparatus by aid of which my invention may be utilized,--Figure 1 is a front elevation of the separator; and Fig. 2 is a side elevation of the separator.

This apparatus which is illustrated in a very simple form is in eifect a digester com posed of a cylindrical body B-surmounted by a dome C, and terminating at its lower end in a cone D. At about the middle height of the cylinder B, the test chamber E is attached by means of the pipes Q and R which, under the control of valves S and T, ailord means of communication between the digester and the test chamber E. This test chamber is provided with a sight glass F. A gage glass G serves to indicate the upper level of liquid in the digester, a pres sure gage H is applied to indicate the internal pressure, and the following system of pip es is attached to the apparatus.

The liquor inlet pipe M and outlet pipe N controlled by suitable valves (in this in stance not shown) serve to introduce and withdraw liquor from the digester. A steam inlet pipe J and steam outlet pipe K communicate with an interior steam coil, shown in dotted lines at L. A drain pipe 0 is controlled by the valve P. A scum outlet pipe is provided at I.

paratus above described as follows: Wool is inserted at the apex of the cone D and Specification of Letters Patent.

Patented Sept. 8,1914. Serial No. 739,597.

scouring liquor is introduced through the pipe M, the vent valve U being open to allow the digester to be filled. When' the level of wool scouring liquor shows in gage glass (,i', the supply is cut ofl and the vent valve U closed. All the pipes communicatin with the interior of the digester being close steam is admitted at J, circulating through the coil L and emerging through pipe K, and the liquor is heated to 160 to 170 eentigradc. The pressure in the digester at this temperature will not be far from 110 pounds. The grease particles become coagulnted by reason of the heat and circulate rapidly with the liquor; the coagulation of the greasy particles will be apparent by observation of the sight glass F attached to the test chamber E, in which (valves S and T being open) the liquoris heated by circulation.

The progress of the process may be tested by closing the valves S and T, and therefore a lowing the liquor in the test chamber E to cool off. As it cools the circulation becomes less violent, and if the li 1101' in the sight glass F clears by the sett in of coagulated grease, it is evident that the heating in the digester has continued long enough. The steam circulation is then cut oil, the body of liquor in the digester cools and the slow convection currents carry the grease particles into the cone D, where the heaviest matter and dirt has already settled, forming a mass sharply distinguished from the liquor out of which the grease particles settle. as cooling proceeds.

portions, rise to the surface of the liquor in the digester and there form a fluid layer free from dirt. The different separated products can now be tapped off. The top grease is drawn off through the scum out-let pipe I; this should preferably be drawn ofl' while the digester is still fairly hot. The liquor outlet pipe N is next opened, and after the blowing off of any grease that may have happened to settle in it, the liquor containing the potash salts and the soluble greases runs outclear and dark colored. After the liquor has been drawn through the pipe N, the heavy greases and dirt can be run through pipe 0. These greases are a thick viscid mass that usually jellies on cooling.

Some of the greasy constituents, principally the neutral The products thus I separated rnay be ways to make them marue'us of wool scouring and analogous liquors, which consists in subjecting the liquor to heat under pressure until the lighter fatty substances and the heavier greases becomesegregated in the liquor, the foriner rising to the top and the latter settling in coagulated form to the bottom.

2. The method of separating the constituents of Wool scouring and analogous liquors, which consists in heating the liquor to about 105- centigrade under pressure until the lighter and heavier greasy substances have separated in the liquor, the former rising to the top and the latter settling in coagulatecl form to the bottom.

3. The method of separating the constit-. uents of Wool scouring and analogous liquors, which consists in subjecting? the liquor to heat under pressure until the lighter fatty substances and the heavier greases become segregated in the liquor on :cooling, the former rising to the top andthe' latter settling in coagulated form to the bottom.

I 4. The method of separating the constituents of wool scouring and analogous liquors, which consists in heating the liquor to about 165 cent-i rade under pressure until the lighter an heavier greasy substances segregate in the liquor on cooling, the former risin to the top and the latter settling in coagulated form to the bottom.

, Signed at Boston, Massachusetts, this eighteenth day of December 1912.

WILLIAM aroma ABBOTT, Jlt.

Witnesses:

ODIN ROBERTS, 7 CHARLES D. WOODBERRY. 

